6297218645 has 12 divisors (see below), whose sum is σ = 7899501036. Its totient is φ = 4818739200.

The previous prime is 6297218639. The next prime is 6297218647. The reversal of 6297218645 is 5468127926.

It can be written as a sum of positive squares in 2 ways, for example, as 1792929649 + 4504288996 = 42343^2 + 67114^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6297218645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6297218593 and 6297218602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6297218647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1187756 + ... + 1193045.

It is an arithmetic number, because the mean of its divisors is an integer number (658291753).

Almost surely, 2^6297218645 is an apocalyptic number.

It is an amenable number.

6297218645 is a deficient number, since it is larger than the sum of its proper divisors (1602282391).

6297218645 is a wasteful number, since it uses less digits than its factorization.

6297218645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380852 (or 2380829 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 6297218645 is about 79355.0165080948. The cubic root of 6297218645 is about 1846.6429154362.

The spelling of 6297218645 in words is "six billion, two hundred ninety-seven million, two hundred eighteen thousand, six hundred forty-five".